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优化选择策略,以提高印度杂交山羊的繁殖效率,使用牛奶生产率作为选择标准

Amritanshu Upadhyay¹, Rani Alex¹, Shweta Sahoo²

¹Animal Genetics and Breeding Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India.

Reproduction in domestic animals = Zuchthygiene

|November 28, 2023

概括

该研究优化了阿尔卑斯山 × 甲杂交山羊的选择策略,发现150天的奶产 (150DMY) 是提高牛奶产量和生殖效率的合适标准.

科学领域:

动物科学动物科学
遗传学是一个遗传学.
乳制品生产乳制品生产

背景情况:

阿尔卑斯山 × 牛牛杂交的山羊对于牛奶生产至关重要.
对这些山羊来说,提高生殖效率和牛奶生产率至关重要.
优化选择策略是实现遗传收益的关键.

研究的目的:

为了优化阿尔卑斯山 × 牛肉杂交山羊的选择策略.
为了提高生殖效率和牛奶生产率.
确定最适合用于基因改进的选择标准.

主要方法:

分析了2949个牛奶特征记录和1389个生殖特征记录.
使用了一个动物模型,平均信息限制了差异成分估计的最大概率.
采用吉布斯采样方法对牛奶产量和生殖特征进行双变量分析.

主要成果:

150天的牛奶产量 (150DMY) 显示出中度的遗传性 (0.18) 和重复性 (0.28).
150DMY与其他生产 (DIM,PY,TMY) 和生殖特征 (LS,LW) 呈现出强烈的正遗传相关性.
根据150DMY进行选择表明,对子重量和子大小的间接基因改善是有利的.

结论:

150天的奶产 (150DMY) 建议作为单一特征选择标准.
这种选择策略可以提高阿尔卑斯山山羊的牛奶生产率和生殖潜力.
该研究表明,所有分析的特征都有积极的遗传趋势,表明成功改善.

关键词:

阿尔卑斯山 × 甲动物动物模型动物模型遗传参数是一种遗传参数.哺乳期的特征哺乳期的特征生殖效率提高的生殖效率.选择标准选择标准

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